JavaWeb在线预览文件

package com.ntc.openoffice; import java.awt.image.BufferedImage; import java.awt.image.RenderedImage; import java.io.File; import java.io.IOException; import java.net.ConnectException; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.List; import javax.imageio.ImageIO; import org.apache.commons.io.FilenameUtils; import org.icepdf.core.pobjects.Document; import org.icepdf.core.pobjects.Page; import org.icepdf.core.util.GraphicsRenderingHints; import com.artofsolving.jodconverter.DefaultDocumentFormatRegistry; import com.artofsolving.jodconverter.DocumentConverter; import com.artofsolving.jodconverter.DocumentFormat; import com.artofsolving.jodconverter.openoffice.connection.OpenOfficeConnection; import com.artofsolving.jodconverter.openoffice.connection.SocketOpenOfficeConnection; import com.artofsolving.jodconverter.openoffice.converter.OpenOfficeDocumentConverter; import com.artofsolving.jodconverter.openoffice.converter.StreamOpenOfficeDocumentConverter; public class PDFDemo { public static boolean officeToPDF(String sourceFile, String destFile) { try { String OpenOffice_HOME = "D:\\Users\\OpenOffice 4\\"; //这里是OpenOffice的安装目录, 在我的项目中,为了便于拓展接口,没有直接写成这个样子,但是这样是绝对没问题的 // 启动OpenOffice的服务 String command = OpenOffice_HOME + "program\\soffice.exe -headless -accept=\"socket,host=127.0.0.1,port=8100;urp;\""; Process pro = Runtime.getRuntime().exec(command); File inputFile = new File(sourceFile); if (!inputFile.exists()) { // 找不到源文件, 则返回false return false; } // 如果目标路径不存在, 则新建该路径 File outputFile = new File(destFile); if (!outputFile.getParentFile().exists()) { outputFile.getParentFile().mkdirs(); } //如果目标文件存在，则删除 if (outputFile.exists()) { outputFile.delete(); } DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm"); OpenOfficeConnection connection = new SocketOpenOfficeConnection("127.0.0.1", 8100); connection.connect(); //用于测试openOffice连接时间 System.out.println("连接时间:" + df.format(new Date())); DocumentConverter converter = new ConverterDocument(connection); converter.convert(inputFile, outputFile); //测试word转PDF的转换时间 System.out.println("转换时间:" + df.format(new Date())); //关闭服务 // close the connection connection.disconnect(); // 关闭OpenOffice服务的进程 pro.destroy(); return true; } catch (ConnectException e) { e.printStackTrace(); System.err.println("openOffice连接失败！请检查IP,端口"); } catch (Exception e) { e.printStackTrace(); } return false; } /** * 将pdf转换成图片 * * @param pdfPath * @param imagePath * @return 返回转换后图片的名字 * @throws Exception */ public static List<String> pdf2Imgs(String pdfPath, String imgDirPath) throws Exception { Document document = new Document(); document.setFile(pdfPath); float scale = 5f;//放大倍数 float rotation = 0f;//旋转度数 List<String> imgNames = new ArrayList<String>(); int pageNum = document.getNumberOfPages(); File imgDir = new File(imgDirPath); if (!imgDir.exists()) { imgDir.mkdirs(); } for (int i = 0; i < pageNum; i++) { BufferedImage image = (BufferedImage) document.getPageImage(i, GraphicsRenderingHints.SCREEN, Page.BOUNDARY_CROPBOX, rotation, scale); RenderedImage rendImage = image; try { String filePath = imgDirPath + File.separator + i + ".jpg"; File file = new File(filePath); ImageIO.write(rendImage, "jpg", file); imgNames.add(FilenameUtils.getName(filePath)); } catch (IOException e) { e.printStackTrace(); return null; } image.flush(); } document.dispose(); return imgNames; } public static void doc2Pdf(String docPath, String pdfPath) throws ConnectException { File inputFile = new File(docPath); File outputFile = new File(pdfPath); OpenOfficeConnection connection = new SocketOpenOfficeConnection(8100); connection.connect(); DocumentConverter converter = new OpenOfficeDocumentConverter(connection); //converter.convert(inputFile, outputFile); DefaultDocumentFormatRegistry formatReg = new DefaultDocumentFormatRegistry(); DocumentFormat txt = formatReg.getFormatByFileExtension("odt") ; DocumentFormat pdf = formatReg.getFormatByFileExtension("pdf") ; converter.convert(inputFile, txt, outputFile, pdf); connection.disconnect(); } public static void doc2Imags(String docPath, String imgDirPath){ String pdfPath =String.format("%s%s.pdf", FilenameUtils.getFullPath(docPath), FilenameUtils.getBaseName(docPath)); try { doc2Pdf(docPath, pdfPath); pdf2Imgs(pdfPath, imgDirPath); File pdf = new File(pdfPath); if(pdf.isFile()){ pdf.delete(); } } catch (ConnectException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } public static void main(String[] args) { //转pdf officeToPDF("E:\\test.xlsx", "E:\\test.pdf"); //专图片194625406 String docPath = "E:\\test.xlsx"; String pdfPath = "E:\\test"; doc2Imags(docPath, pdfPath); } }